試圖給定的輸入存儲爲弗洛伊德三角形

Question

import java.util.*; 
    public class triangle{ 
     public static void main(String args[]){ 
     Scanner input_Obj = new Scanner(System.in); 
     System.out.println("Enter the number of lines in the triangle"); 
     int sum = 0; 
     int mat_size = input_Obj.nextInt(); //input of the size of the triangle 
     System.out.println("enter the inputs"); 
     int input_Array[][] = new int[mat_size][mat_size]; 
     for (int row = 0; row < mat_size; row++){ 
     for (int col = 0; col < col; col++){ 
      input_Array[row][col] = input_Obj.nextInt(); 
     } 
    } 
     if (mat_size >= 3){ 
      int[] sum_array = new int[2*(mat_size-2)]; 
     for (int row = 1; row < mat_size; row++){ 
      for(int col = 0;col<=row;col++){ 
       sum += input_Array[row][col]; 
      } 
      sum_array[row-1] = sum; 
     } 
    } 
     else if(mat_size == 2){ 
      if (input_Array[1][0]<input_Array[1][1]){ 
       System.out.println("minimum of the two elements in second  line is:" +input_Array[1][0]); 
      } 
      else{ 
       System.out.println("minimum of the two elements in second line is:" +input_Array[1][1]); 
      } 
     } 
     else{ 
      System.out.println("minimum sum can't be calculated"); 
     } 
    } 
} 

它不輸入數組 據取入mat_size輸入但不採取投入數組中存儲的值 我試圖發現裏面的最小和三角形

Answer 1

for (int col = 0; col < col; col++) 

col < col這是問題的條件是永遠不會滿足，這就是爲什麼它沒有采取任何的輸入，這種情況改變

for (int col = 0; col < mat_size; col++)